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General Knowledge for Competitive Exams

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Do you know why Oil and Water does not mix together?

Nov 17, 2017
We have seen many times and even we have tried at our homes that when we put oil in water and stir it, eventually they separate in to two distinct layers. Why is it so? Through this article we will study why oil and water does not mix together, why oil is sticky and why oil floats on water.

What are the suicidal bags of cell?

Nov 16, 2017
Lysosomes are found in animal cell, they are also known as suicidal bags of the cell. A human cell contains around 300 lysosomes. They not only digest large molecules but also responsible for breaking down and getting rid of waste products of the cell. They have enzymes which allow them to carry out these processes. Let us find out how lysosymes look, what are its function, why they are known as suicidal bags of the cell etc.

Why Smartphone light is dangerous for health

Nov 13, 2017
Nowadays Smartphone are used by everyone, which has become an important part of life. With the help of these small devices we connect and update with each other, even this has become a great source of entertainment. The Smartphone has many benefits, but it can’t be ignored that the light coming out of the phone can cause significant damage to the health. Let's see how this light of the Smartphone is harmful for health.

Composition and Functions of Blood

Nov 10, 2017
Blood is a red coloured liquid which circulates in our body. It is red in colour because it contains a red pigment called haemoglobin in its red cells. Blood is a connective tissue, it consists of four things namely Plasma, Red blood corpuscles (Red blood cells or RBCs), White blood corpuscles (White blood cells or WBCs) and platelets. Blood helps in transportation of substances, protect against diseases and regulates body temperature.

What is SMOG and how it is harmful for us?

Nov 8, 2017
Smog is derived from two words i.e. smoke and fog which is also described as a mixture of various gases with dust and water vapour and makes breathing difficult. In 17 years such an alarming situation raised in Delhi which raised health emergency. In this article we will discuss about the sources of smog, how it affects our health and how it is formed; what are the necessary precautions that we can take etc.

Why Lichens are important for environment?

Nov 7, 2017
Lichens are found world-wide and mainly grow on various places like on the bark of tree, walls, rocks, gravestones, roofs and soil etc. It plays an important role in making the environment free from pollution. This article deals why lichens are necessary for the environment, where it is found and what are its economic importance.

What is the role of Helium in Medicines?

Nov 6, 2017
Helium is the lightest noble gas. It consists of various physical and chemical properties due to which it is used in respiratory ailments therapies. Due to its inert gas property it helps in neuroprotection, in surgery, in MRI technique etc. This article deals with the role of helium in medicines and how it is used in various techniques for the treatment of patients.

Is Nitrogen important for Human Body?

Nov 1, 2017
Nitrogen is represented by the symbol N. It is abundant in the environment but humans can’t use it directly from air or soil but depends upon green plants and microbes to convert it in to the usable form for using it. But the question arises that why Nitrogen is important for humans and how they use it etc. are discussed in this article.

How Silk is produced from Silkworm?

Oct 31, 2017
Silkworm is an insect that makes silk. Its scientific name is Bombyx Mori. The world's first practice of silk production was started in China. Clothes made from Silk and other things are liked by everyone because of its texture. But the question arises, how silkworm produces silk is discussed in this article.

How many types of Kidney Stones are formed in Human Body

Oct 31, 2017
Kidney stone is a common disease. It causes severe pain in back or in abdomen. These stones are made up of minerals and salts deposit in the form of crystals and formed anywhere in the urinary tract. Do you know how many types of kidney stones are formed in the human body and how they occur? What are the symptoms of the formation of Kidney stones etc. are discussed in this article.

List of Phenomena related to Sound

Oct 27, 2017
Sound is all around us but do you know what is sound. It is a type of energy made up by the vibrations produced. It travels as a wave through a medium like liquid, solid or gas but it does not exist in a vacuum of space. This article deals with the various phenomena of sound with explanation for better understanding.

What is the function of hydrogen in the human body?

Oct 26, 2017
Hydrogen is the first element of the periodic table. The most important function of hydrogen in the human body is to keep you hydrated. Water is made up of hydrogen and oxygen and is absorbed by the cells of the body. Therefore, it is a crucial element which is used not in our body but also as a fuel, in military weapons etc. This article deals with the importance and function of hydrogen in the human body.

List of Important Biological Phenomena

Oct 25, 2017
Biological phenomenon is the series of chemical reactions or other events that result in a transformation. These are regulated by various mechanisms. In this article we are discussing about the important biological phenomena and its impacts.

Do you know how human brain works?

Oct 24, 2017
Brain act like computer for our body. It processes information receives messages and sends back to the body. With the help of brain human able to think and experience emotions. It is a very important part of the human body. But the question arises how brain works. Which part of the brain responsible for various functions and communication? All this will be discussed in this article.

Do you know about the Anti-Zika virus vaccine

Oct 11, 2017
Vaccine of diseases Zika, Dengue and Hepatitis C have been discovered which will save the lives of the people in India. How it is developed, how it will work, what is Zika, dengue and hepatitis virus etc. are discussed in this article.

What makes diamond shine and sparkle?

Oct 9, 2017
Diamond is the star of jewellery. Being hardest substance it shines and sparkle. It has three dimensional arrangement of carbon atoms linked together by strong covalent bonds. In this article we will discuss why diamond shine and sparkle. Which property makes it shiny etc.

Which acid is used to peel ginger skin and how it affects health?

Oct 7, 2017
Ginger is a very common spice which is used in almost everyone's homes for cooking. But adulteration of ginger is a life threatening issue which is causing several serious diseases like cancer. Which acid is used by the vegetable vendors to make ginger shiny or polished and how it can affect health is discussed in this article.

What are Generic Medicines and why are they affordable

Oct 5, 2017
According to the World Health Organization, if doctor started prescribing generic medicines, then health expenditure can be reduced by 70% in developed countries and developing countries. Generic drugs consumption is only 10-12 percent of the total drug market. Greedy attitude of the drug manufacturer companies, medical stores and doctors don't want to spread the market of generic drugs. In today’s world almost all type of generic drugs are available at the price lower than the branded medicines.

Do you know what makes us yawn?

Sep 28, 2017
Yawning is a very common process that everyone does even animals also. Most of us yawn when we go to bed or when we wake up and when we get bored etc. Let us find out the reasons why we yawn. Is it a natural phenomenon?

Do you know about the ‘Plastic-eating’ fungus discovered in Pakistan

Sep 27, 2017
Scientists have discovered a natural method to degrade plastic which take decades. They have found a fungus that can break a non-biodegradable plastic in weeks by secreting enzymes which pull apart individual molecules. Let us find out about this fungus, how it works, what is the name of the fungus.

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